Folder BLR

See Chuck Hensley's comprehensive index to articles in the BLR in the folder below.  It can be used to locate articles to research, whether found in the TCI LIbrary or elsewhere.

Chuck has offered to scan a limited number of pages from his collection (at his convenience).  Send requests using the "Contact Us" link in the Menu Bar above.

HINT:  Search for "BLR" followed by a topic keyword to find a series of related articles.  Use alphabetic sort to display them in chronological order.  e.g.  BLR PBX  or  BLR Picturephone.

When posted, complete scanned BLR issues were available here:
  http://www.americanradiohistory.com/Bell_Laboratories_Record_Issue_Key.htm

Categories

Documents

pdf 64Aug BLR P247 761A PBX Small Hotel Motel Popular

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64Aug_BLR_P247_761A_PBX_Small_Hotel_Motel.pdf

64Aug BLR P247 761A PBX Small Hotel Motel

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 64May BLR P159 Handsets With Amplifiers G6 G7 G8

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64May_BLR_P159_Handsets_With_Amplifiers_G6_G7_G8.pdf

64May BLR P159 Handsets With Amplifiers G6 G7 G8

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 65jun BLR - No. 1 ESS - [1] pp 194-213 [LARGE FILE] Popular

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No. 1 ESS Section I.pdf

65jun BLR - No. 1 ESS - [1] pp 194-213 [LARGE FILE]

June 1965 Bell Labs Record (BLR) special Issue includes: Evolution of Telephone Switching, From Morris to Succassuna, The Stored Program, The Control Unit, Memory Devices, The Switching Network, Mechanical Design, Testing The System, Cutover, etc.   -- In four downloads, part 1. 1ESS.

pdf 65jun BLR - No. 1 ESS - [2] pp 214-235 [LARGE FILE] Popular

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No. 1 ESS Section II.pdf

65jun BLR - No. 1 ESS - [2] pp 214-235 [LARGE FILE]

1ESS Part 2 of 4.

pdf 65jun BLR - No. 1 ESS - [3] pp 236-261 [LARGE FILE] Popular

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No 1 ESS Section III.pdf

65jun BLR - No. 1 ESS - [3] pp 236-261 [LARGE FILE]

1ESS Part 3 of 4.

pdf 65jun BLR - No. 1 ESS - [4] pp 262-281 [LARGE FILE] Popular

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No 1 ESS Section IV.pdf

65jun BLR - No. 1 ESS - [4] pp 262-281 [LARGE FILE]

1ESS Part 4 of 4.

pdf 65Nov BLR P395 Designing Telephone Ringers

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65Nov_BLR_P395_Designing_Telephone_Ringers.pdf

65Nov BLR P395 Designing Telephone Ringers

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 65Sep BLR P344 Trimline Introduction Popular

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65Sep_BLR_P344_Trimline_Introduction.pdf

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66jan BLR - Trimline Development Popular

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Trimline Development.pdf

66jan BLR - Trimline Development

Jan 66, Bell Labs Record, pp 8-14. "The Evolution Of A Telephone,"   Great photo evolution chart showing prototypes on page 10 and info on field trials.

pdf 66Jan BLR P16 New Coin Look

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66Jan_BLR_P16_New_Coin_Look.pdf

66Jan BLR P16 New Coin Look

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66Jan BLR P20 Single Slot Payphone Popular

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66Jan_BLR_P20_Single_Slot_Payphone.pdf

66Jan BLR P20 Single Slot Payphone

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66Jan BLR P24 CALL A MATIC

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66Jan_BLR_P24_CALL_A_MATIC.pdf

66Jan BLR P24 CALL A MATIC

Call-a-matic Dialer. Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66Jan BLR P34 Designing Telephone Components

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66Jan_BLR_P34_Designing_Telephone_Components.pdf

66Jan BLR P34 Designing Telephone Components

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66Jan BLR P9 Trimline A Telephone Evolution

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66Jan_BLR_P9_Trimline_A_Telephone_Evolution.pdf

66Jan BLR P9 Trimline A Telephone Evolution

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66mar BLR - 1A2 Key Telephone System Popular

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1A2 KTS - BLR 1966.pdf

66mar BLR -  1A2 Key Telephone System

Mar 1966, Bell Labs Review, Pages 85-88. "Key Telephone System: The Latest Chapter"

pdf 66Mar BLR P85 Key Telephone Systems 1A2 KSUs Popular

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66Mar_BLR_P85_Key_Telephone_Systems_1A2_KSUs.pdf

66Mar BLR P85 Key Telephone Systems 1A2 KSUs

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 66May BLR P159 Expanding 101ESS Popular

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66May_BLR_P159_Expanding_101ESS.pdf

66May BLR P159 Expanding 101ESS

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 66Nov BLR P319 Trimline TouchTone Integrated Circuit

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66Nov_BLR_P319_Trimline_TouchTone_Integrated_Circuit.pdf

66Nov BLR P319 Trimline TouchTone Integrated Circuit

Bell Laboratories Record. Contributed by Chuck Hensley.

pdf 67Apr BLR P122 Jacketed Station Wire Popular

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67Apr_BLR_P122_Jacketed_Station_Wire.pdf

67Apr BLR P122 Jacketed Station Wire

Bell Laboratories Record.  Contributed by Chuck Hensley.

pdf 67Dec BLR P374 New Picturephone Model II Popular

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67Dec_BLR_P374_New_Picturephone_Model_II.pdf

67Dec BLR P374 New Picturephone Model II

Bell Laboratories Record.  Contributed by Chuck Hensley.

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